Steam-condensing doctor for paper-machines



(No Model.)

F. BREWER.

STEAM GONDENSING DOCTOR FOR PAPER MACHINE S.

WITNESSES.

Patented Jan. 19, 1886.

J/WW

INVENTOR UNTTED STATES PATENT OFFICE.

FRANK BREWER, on MARSEILLES, ILLINOlS.

STEAM-CONDENSING DOCTOR FOR PAPER-MACHINES.

SPECIFICATION forming-part of Letters Patent No. 334,415, dated January 19, 1886.

Serial No. 171,806. (No model.)

To all whom it may concern.-

Be it known that I, FRANK BREWER, of Marseilles, La Salle county, Illinois, have invented a new and useful machine called a Steam- Condensing Doctor, of which the following is a clear, full, and exact description, by which those skilled in the art to which my invention appertains may be enabled to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Similar letters of reference refer to like parts in all the drawings.

This invention relates to improvements in mechanism for moistening the calender-rolls of paper-making machines, the objects being to heat the rolls from the exterior and to moisten the same; and it consists in the construction and novel arrangement of parts hereinafter described, and pointed out in the appended claims.

The device, besides performing the abovementioned functions, acts as a doctor to remove any waste from the rolls and prevent them from clogging.

In the accompanying drawings, Figure 1 represents a side elevation of a stand of calender-rolls with the device attached. Fig. 2 is a transverse vertical section through the rolls and the device. Fig. 3 is a longitudinal view of one of the pipes of the devicepartly broken away and partly in section. Fig. 4 is an enlarged sectional detail View of one roll and pipe. Fig. 5 represents one of the brackets to hold the pipes to the rolls, and Fig. 6 represents the end cap of one of the pipes.

Referring to the accompanying drawings by letter, A designates the frame, upon which the rolls a a are journaled in proper bearings, the journals being designated by a a.

b b b are pipes having their ends closed by the screw-caps'b, Fig. 6. The caps have central circular openings, for a purpose hereinafter explained. The caps may be secured in position, when screwed on the ends of the pipes, by the set-screws b.

Brackets F, Fig. 5, are secured to the standards of the frame in such position that pipes b, near their ends,will rest in the concave notches f of said brackets, and may be firmly held therein by the set-screws f, which pass through the flanges of the notches, as shown. The brackets may be secured in place in any desirable manner, but are preferably secured by means of set-screws passing through the slots f and entering the outer sides of the stand ards, thus making the brackets adjustable thereon.

The pipes b cross the frame A transversely, and are preferably so situated as to lie adjacent to every second one of the smaller rolls a, as shown in Fig. 2, the axis of each roll and its corresponding pipe being in the same horizontal plane.

Each pipe I; has a longitudinal slot, B, the edges of which form a close joint against the surface of the roll. The said slot does not extend the entire length of the pipe, its end being equally distant from the ends thereof. The axis of the slot lies in the plane with those of the roll and pipe.

0 O are small steam-pipes running through the pipes 12, passing through the openings in the caps F, and having their ends on one side closed. Their other ends are connected by proper couplings, o c o, to the stearn-pipe C, Fig. 1, which takes steam from any suitable source of supply.

Each pipe 0, Fig. 2, has a longitudinal series of small equidistant openings, D, on the side facing the roll, and lying in the same plane as the axes of the roll and pipe.

d d are discharge-pipes for water of condensation, which pipes depend from the pipes b on the side adjacent to the steam-pipe 0'.

Steam being admitted through the pipes O G will pass out of the openings D and fill the spaces E between the pipes b and O, and as the rolls rotate will heat and moisten them.

The. pipes 12, on account of their contact to the rolls, will act as doctors to the same to remove waste that might clog the rolls.

Having described my invention, I claim 1. The combination of the rolls with a sys tem of steam-pipes to heat and moisten them on their exterior surfaces, substantially as specified.

2. The combination of the rolls with a system of steam-pipes provided with longitudinal slots lying closely against the rolls, and

through which they receive heat and moisture, nccting with the pipes C, all constructed and the pipes acting as doctors to keep the rolls arranged substantiallyasshown anddescribed, clear, substantially as specified. for the purpose specified.

3. The combination, with a stand of calen- FRANK BREWER. 5 Ger-rolls, of the pipes I), provided with the Witnesses:

slots B, the interior steam'pipes, 0, having the H. E. WESTERVELT, openings D and the main steam-pipe 0, con- J. L. DRAKE. 

